基于Maxwell与Simplorer仿真分析磁通门磁场传感器瞬态响应

发布时间：2018-10-19 18:09

【摘要】：为分析磁通门磁场传感器的工作原理,基于Maxwell和Simplorer软件建立了磁通门磁场传感器的电磁联合仿真模型,仿真了磁通门非线性激励电路中电流波形和磁通门传感器的瞬态响应过程,分析计算了磁通门二次谐波灵敏度以及磁通门传感器的转换系数。为验证仿真模型的准确性,利用钴基非晶薄片制作了磁通门传感器探头并利用开关电源驱动电路激励磁通门工作。实际测量的激励电流波形与仿真结果基本一致,磁通门二次谐波灵敏度的测量值与仿真值误差小于1.1%。测量磁通门的频率响应曲线得到磁通门的转换系数为100 m V/μT,与仿真值几乎完全一致,两者误差小于1.5%。该仿真模型对理解磁通门传感器的工作原理、瞬态响应过程以及指导微型磁通门传感器设计具有重要意义。
[Abstract]:In order to analyze the working principle of flux gate magnetic field sensor, the electromagnetic joint simulation model of flux gate magnetic field sensor is established based on Maxwell and Simplorer software. The current waveform and transient response of fluxgate sensor in the fluxgate nonlinear excitation circuit are simulated. The second harmonic sensitivity of fluxgate and the conversion coefficient of fluxgate sensor are analyzed and calculated. In order to verify the accuracy of the simulation model, the fluxgate sensor probe was fabricated by using cobalt-based amorphous wafer and the drive circuit of switch power supply was used to excite the fluxgate. The measured excitation current waveform is basically consistent with the simulation results, and the error between the measured value and the simulation value of the fluxgate second harmonic sensitivity is less than 1.1. By measuring the frequency response curve of the flux gate, the conversion coefficient of the flux gate is 100 MV / 渭 T, which is almost identical with the simulation value, and the error between them is less than 1.5. The simulation model is of great significance for understanding the working principle of fluxgate sensor, transient response process and guiding the design of micro fluxgate sensor.
【作者单位】：中国科学院电子学研究所电磁辐射与探测技术重点实验室;中国科学院大学;
【基金】：国家重大科研装备研制项目(ZDYZ2012-1-05-02) 国家自然科学基金项目(41374186)
【分类号】：TP212

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